module SessionHelper

  def log_in(user)
      session[:user_id] = user.id
    end

    def logged_in?
  		!current_user.nil?
  	end

    def log_out
  		session.delete(:user_id)
  		@current_user = nil
  	end

    def current_user
      @current_user ||= User.find_by(id: session[:user_id])
    end

end
